442100249 has 4 divisors (see below), whose sum is σ = 468106164. Its totient is φ = 416094336.

The previous prime is 442100231. The next prime is 442100299. The reversal of 442100249 is 942001244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 402724624 + 39375625 = 20068^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 442100249 - 2⁸ = 442099993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442100209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13002932 + ... + 13002965.

It is an arithmetic number, because the mean of its divisors is an integer number (117026541).

Almost surely, 2^442100249 is an apocalyptic number.

It is an amenable number.

442100249 is a deficient number, since it is larger than the sum of its proper divisors (26005915).

442100249 is a wasteful number, since it uses less digits than its factorization.

442100249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26005914.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 442100249 is about 21026.1800857883. The cubic root of 442100249 is about 761.7987455409.

The spelling of 442100249 in words is "four hundred forty-two million, one hundred thousand, two hundred forty-nine".